Home / 830,006.40-1,145,393.76-467,428.80

Finding the Fourth Proportional to 830,006.40, 1,145,393.76 and 467,428.80

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Solution

The fourth proportional to 830,006.40, 1,145,393.76 and 467,428.80 is: 645,043.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,006.40 : 1,145,393.76 = 467,428.80 : x
  2. Step 2: Convert to fraction form
    830,006.40/1,145,393.76 = 467,428.80/x
  3. Step 3: Cross multiply
    830,006.40x = 1,145,393.76 × 467,428.80
  4. Step 4: Simplify right side
    830,006.40x = 535,390,030,764.29
  5. Step 5: Solve for x
    x = 535,390,030,764.29/830,006.40
  6. Step 6: Final answer
    x = 645,043.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.